From: Jens Freimann <jfrei@xxxxxxxxxxxxxxxxxx> In __inject_sigp_stop() do nothing when the CPU is already in stopped state. Signed-off-by: Jens Freimann <jfrei@xxxxxxxxxxxxxxxxxx> Signed-off-by: Christian Borntraeger <borntraeger@xxxxxxxxxx> --- arch/s390/kvm/sigp.c | 3 +++ 1 files changed, 3 insertions(+), 0 deletions(-) diff --git a/arch/s390/kvm/sigp.c b/arch/s390/kvm/sigp.c index 336905c..aa7845a 100644 --- a/arch/s390/kvm/sigp.c +++ b/arch/s390/kvm/sigp.c @@ -160,12 +160,15 @@ static int __inject_sigp_stop(struct kvm_s390_local_interrupt *li, int action) inti->type = KVM_S390_SIGP_STOP; spin_lock_bh(&li->lock); + if ((atomic_read(li->cpuflags) & CPUSTAT_STOPPED)) + goto out; list_add_tail(&inti->list, &li->list); atomic_set(&li->active, 1); atomic_set_mask(CPUSTAT_STOP_INT, li->cpuflags); li->action_bits |= action; if (waitqueue_active(&li->wq)) wake_up_interruptible(&li->wq); +out: spin_unlock_bh(&li->lock); return 0; /* order accepted */ -- 1.7.9 -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
